[holding answer 24 July 1989]: At 30 June 1989, the most recent date for which figures are available, there were 651 patients detained at the special hospitals at Moss Side and Park Lane. At 31 December 1986, the latest date for which a figure is available centrally for all detained patients in mental illness and mental handicap hospitals and the units covered by the Liverpool area of the Mental Health Act Commission there were 1,867 detained patients.